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70 B-body drum master cylinder bore? #267047 03/26/09 08:51 AM 03/26/09 08:51 AM
Joined: Aug 2005 Posts: 634 Maryland, USA, S satgtx OP mopar
satgtx OP mopar S Joined: Aug 2005 Posts: 634 Maryland, USA,	Is the bore on a 70 B body master cylinder 1" or 1" 1/32? i want to rebuild mine. manual drum brakes.

Re: 70 B-body drum master cylinder bore? [Re: satgtx] #267048 03/26/09 11:30 AM 03/26/09 11:30 AM
Joined: Jan 2005 Posts: 8,341 Crook County, ILL Mastershake340 master
Mastershake340 master Joined: Jan 2005 Posts: 8,341 Crook County, ILL	They are 1" bore. '71-on master cylinders were 1-1/32". Since they all have the same 4 bolt mounting flange and outlet threads, it is not uncommon to see '71 up master cylinders that have been installed on earlier cars, so make sure yours is actually the '67-'70 style. Original '67-'70 drum brake master cylinders had a bolt on style filler cap.

Re: 70 B-body drum master cylinder bore? [Re: Mastershake340] #267049 03/26/09 12:26 PM 03/26/09 12:26 PM
Joined: Aug 2005 Posts: 634 Maryland, USA, S satgtx OP mopar
satgtx OP mopar S Joined: Aug 2005 Posts: 634 Maryland, USA,	Mastershake, thank you for the answer, yes it is the original MC.

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